Auxiliary feeding device and feeding method of soil element analyzer

Abstract

The present invention discloses an auxiliary feeding device and feeding method for a soil element analyzer, comprising a hollow outer cylinder with a discharge port, a material conveying device disposed within the outer cylinder, a feeding device coaxially disposed within the outer cylinder, and a plurality of storage bins disposed on the feeding device. The feeding device rotates to cause materials placed in the storage bins to sequentially fall onto the material conveying device, which then conveys the materials to the discharge port. The feeding device is mounted on a sliding bracket, the outer cylinder is mounted on a base, and the sliding bracket is slidably connected to the base. The present invention enables automatic feeding of large quantities of materials at one time, significantly reducing the labor intensity of personnel.

Description

Technical Field

[0001] The present invention relates to an auxiliary feeding device, in particular to an auxiliary feeding device and a feeding method for a soil element analyzer. Background Art

[0002] A soil element analyzer is an instrument used to determine several elements in soil samples. It features simple operation, comprehensive functionality, and rapid, accurate analysis. Existing soil element analyzers use an automated mechanism to feed sample packets sequentially through a feed port for analysis. Because the original feed mechanism can accommodate a small number of test sample packets at a time (30 to 50), repeated loading is required throughout the test, especially at night, requiring dedicated personnel to perform this task. This creates a significant workload for the personnel. Summary of the Invention

[0003] The purpose of the present invention is to provide an auxiliary feeding device and feeding method for a soil element analyzer, which can realize automatic feeding of a large amount of materials at one time and greatly reduce the labor intensity of the staff.

[0004] The present invention adopts the following technical solutions:

[0005] An auxiliary feeding device for a soil element analyzer comprises an outer cylinder with a hollow structure and a discharge port, wherein a material conveying device is arranged inside the outer cylinder; a feeding device is also coaxially arranged inside the outer cylinder, and a plurality of storage bins are arranged on the feeding device. The feeding device rotates so that the materials placed in the storage bins fall into the material conveying device in sequence and are conveyed to the discharge port by the material conveying device; the feeding device is arranged on a sliding bracket, the outer cylinder is arranged on a base, and the sliding bracket is slidably connected to the base.

[0006] The material conveying device adopts a screw conveying device arranged on the inner wall of the outer cylinder, and the outer cylinder is driven to rotate by an outer cylinder driving device.

[0007] The discharge port is arranged on the circumferential surface of one end of the outer cylinder, and the position of the discharge port corresponds to the position of the discharge port of the spiral conveying device.

[0008] The outer cylinder driving device is installed on the driving device support plate set at one end of the base, and the rotating shaft of the outer cylinder driving device is connected to the outer cylinder through the outer cylinder driving disk set on one end surface of the outer cylinder; an outer cylinder bracket adapted to the outer diameter of the outer cylinder is also set at one end of the lower part of the base.

[0009] The feeding device includes a coaxial material drum and a guide cylinder arranged inside and outside. The material drum and the guide cylinder are both hollow cylindrical structures. Several storage bins are provided on the surface of the material drum, and a feeding port corresponding to the storage bin is provided on the surface of the guide cylinder. The material drum and the guide cylinder are driven to rotate by the material drum driving device and the guide cylinder driving device respectively. The material placed in the storage bin falls into the material conveying device through the feeding port.

[0010] A drive device support is provided in the material drum, and the material drum drive device and the guide tube drive device are respectively provided in the drive device support. The rotating shaft of the guide tube drive device passes through the hollow rotating shaft of the material drum drive device and is connected to the guide tube. The hollow rotating shaft of the material drum drive device is connected to the material drum, and the drive device support is connected to the sliding bracket.

[0011] Several groups of axial storage bin groups are evenly arranged on the circumferential surface of the material drum along the circumference of the material drum, and each group of axial storage bin groups includes several storage bins evenly arranged axially on the circumferential surface of the material drum; several feeding ports are arranged on the circumferential surface of the guide cylinder along the axial direction of the guide cylinder, and the several feeding ports correspond one-to-one to the positions of the several storage bins in the axial storage bin group.

[0012] The left and right ends of the material drum are respectively provided with a left material drum spoke plate and a right material drum spoke plate, and the left and right ends of the guide cylinder are respectively provided with a left guide cylinder spoke plate and a right guide cylinder spoke plate. The left material drum spoke plate and the left guide cylinder spoke plate are rotatably connected to the left end of the drive device support through the left material drum bearing and the left guide cylinder bearing respectively; the rotating shaft of the guide cylinder drive device is connected to the guide cylinder drive shaft through a coupling, and the guide cylinder drive shaft passes through the hollow rotating shaft of the material drum drive device and is connected to the right guide cylinder spoke plate, and the right material drum spoke plate is rotatably connected to the right end of the drive device support through the right material drum bearing; the right guide cylinder spoke plate is rotatably connected to the right material drum spoke plate through the right guide cylinder bearing.

[0013] An isolation sleeve is provided at the left end of the driving device support between the left bearing of the material drum and the left bearing of the guide cylinder.

[0014] An auxiliary feeding method using the soil element analyzer according to claim 1, comprising the following steps in sequence:

[0015] A: Move the sliding bracket outward to remove the material drum and guide cylinder from the outer cylinder; then proceed to step B;

[0016] B: The drum drive device and the guide drum drive device are used to control the rotation of the drum and the guide drum respectively, so that the multiple feeding ports provided on the circumferential surface of the guide drum are located at the uppermost end, and at the same time, a group of axial storage bins provided on the circumferential surface of the drum are located at the uppermost end. At this time, the multiple feeding ports correspond to the multiple storage bins included in the group of axial storage bins one by one; then, the material bags are sequentially placed into the corresponding storage bins through the feeding ports; then, it is determined whether to continue discharging; if so, step C is entered; if not, step D is entered;

[0017] C: Control the rotation of the drum through the drum driving device so that the next group of axial storage bins provided on the circumferential surface of the drum is located at the uppermost end. At this time, the plurality of feed ports correspond one to one with the plurality of storage bins contained in the group of axial storage bins. Then, the material bags are sequentially placed into the corresponding storage bins through the feed ports. Then, it is determined whether further discharge is required. If so, step C is repeated until all the material bags are placed into the corresponding storage bins. If not, step D is entered.

[0018] D: Move the sliding bracket inward to allow the material drum and guide cylinder to enter the outer cylinder; then proceed to step E;

[0019] E: First, the guide drum is controlled to rotate by the guide drum driving device so that the multiple feeding ports provided on the circumferential surface of the guide drum are located between the two groups of axial storage bin groups provided on the circumferential surface of the drum; then, the drum driving device and the guide drum driving device are respectively used to control the synchronous rotation of the drum and the guide drum until the multiple feeding ports provided on the circumferential surface of the guide drum are located at the lowest end; finally, the drum driving device is used to control the rotation of the drum so that the group of axial storage bin groups provided on the circumferential surface of the drum is located at the lowest end. At this time, the material bags in the axial storage bins of the axial storage bin group located at the lowest end all fall into the spiral conveying device on the inner wall of the outer drum through the corresponding feeding ports;

[0020] E: The outer cylinder is controlled to rotate by the outer cylinder driving device. At this time, every time the outer cylinder rotates one circle, a material bag in the spiral conveying device will fall into the feed hole of the element analyzer through the discharge port. According to the number of material bags in the axial storage bins in the axial storage bin group, the number of rotations of the outer cylinder is controlled until all the material bags in the spiral conveying device fall into the feed hole of the element analyzer in sequence, completing the feeding of the material bags in the axial storage bin group.

[0021] Then determine whether it is necessary to continue feeding; if so, proceed to step F; if not, the auxiliary feeding work of the element analyzer has been completed;

[0022] F: Control the rotation of the drum through the drum driving device so that the next group of axial storage bins with material bags are located at the bottom. At this time, the material bags in the axial storage bins of the axial storage bin group located at the bottom all fall into the spiral conveying device on the inner wall of the outer cylinder through the corresponding feed port; then return to step E.

[0023] The present invention utilizes the rotation of the feeding device to make the materials placed in the storage bin fall onto the material conveying device in sequence through gravity, and then the material conveying device conveys the materials to the discharge port in sequence, and the materials enter the feed hole of the element analyzer through the discharge port in sequence, so as to realize the feeding work of the soil element analyzer one by one according to the set feeding time.

[0024] Furthermore, the present invention utilizes a material drum and a guide cylinder that can both rotate independently to achieve material discharge control, that is, the material is stored separately by the storage bins in each group of axial storage bins evenly arranged on the material drum, and the guide cylinder is used to realize the feeding and discharging control of the storage bins, as well as the position limiting of the material; when the storage bin on the material drum and the feed port on the guide cylinder are both located at the bottom and the positions correspond, the material is driven to fall by gravity; when the material drum and the guide cylinder are located at other positions, the position of the material in the storage bin on the material drum is limited by the wall of the guide cylinder to prevent the material from falling off, and it has the advantages of simple structure and reliable use. At the same time, the present invention realizes the timed delivery of materials in the storage bins in multiple groups of storage bins by controlling the multiple fixed-angle rotations of the material drum, and cooperates with the spiral conveying device arranged on the inner wall of the outer cylinder to sequentially deliver the materials through the discharge port to the feed hole of the element analyzer according to the set feed gap.

[0025] The present invention greatly expands the one-time feeding quantity, reduces the working intensity of the staff, avoids the disadvantage that the staff need to repeatedly perform feeding operations in the existing testing process, and does not require special personnel to be on duty at night to feed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is an explosion diagram of the present invention;

[0028] Figure 3 is a cross-sectional view of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the material drum in the present invention. DETAILED DESCRIPTION

[0030] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0031] like Figures 1 to 4As shown, the auxiliary feeding device of the soil element analyzer described in the present invention includes an outer cylinder 2 with a hollow structure and a discharge port 1. A material conveying device is provided in the outer cylinder 2, and the material conveying device is used to convey the material to the discharge port 1; a feeding device is also coaxially provided in the outer cylinder 2, and the feeding device is provided with a plurality of storage bins 12 for storing materials separately. The feeding device rotates so that the materials placed in the storage bins 12 fall into the material conveying device in sequence, and controls the material conveying device to convey the materials to the discharge port 1 in sequence, so that the materials enter the feed hole of the element analyzer through the discharge port 1 in sequence. A gap matching the size of the material is provided between the outer cylinder 2 and the feeding device to facilitate the smooth movement of the material. The feeding device is provided on a sliding bracket 3, and the outer cylinder 2 is provided on a base 4. The sliding bracket 3 is slidably connected to the base 4, which facilitates the extraction of the material device and the separate loading of the feeding device.

[0032] The outer cylinder 2 and the material conveying device can adopt a split structure. The outer cylinder 2 is fixedly installed on the base 4. The material conveying device moves alone to convey the material on the material conveying device to the discharge port 1 in sequence. The material conveying device can adopt a conveyor belt arranged between the outer cylinder 2 and the feeding device. Through the cyclic stepping motion of the conveyor belt, the material on the conveyor belt falls from the front end of the conveyor belt in sequence according to the set gap, and falls into the feed hole of the element analyzer through the discharge port 1.

[0033] In the present invention, the outer cylinder 2 and the material conveying device adopt an integrated structure. The material conveying device adopts a spiral conveying device 5 arranged on the inner wall of the outer cylinder 2. The outer cylinder 2 is driven to rotate by the outer cylinder driving device 6. By controlling the outer cylinder 2 to rotate periodically, the spiral conveying device 5 is used to convey the material to the discharge port 1 in sequence at set time intervals, and the material falls into the feed hole of the element analyzer in sequence through the discharge port 1.

[0034] In this embodiment, the discharge port 1 is provided on the circumferential surface of one end of the outer cylinder 2, and the position of the discharge port 1 corresponds to the discharge port of the screw conveyor 5. The discharge port 1 can be sized to a quarter of the circumference to facilitate smooth discharge of the material. The screw conveyor 5 can employ a left-handed spiral blade.

[0035] The outer cylinder drive device 6 is mounted on a drive device support plate 7 at the right end of the base 4. The rotating shaft of the outer cylinder drive device 6 is connected to the outer cylinder drive disk 8 via a connecting sleeve 29. The outer cylinder drive disk 8 is located on the right end surface of the outer cylinder 2. An outer cylinder bracket 9, adapted to the outer diameter of the outer cylinder 2, is also provided at one end of the lower portion of the base 4 to cooperate with the outer cylinder drive device 6 to rotate the outer cylinder 2. The outer cylinder drive device 6 can utilize a stepping rotary motor.

[0036] In the present invention, the feeding device includes a coaxial material drum 10 and a guide cylinder 11 which are arranged inside and outside the material drum. The material drum 10 and the guide cylinder 11 are both hollow cylindrical structures. A plurality of material storage bins 12 are provided on the surface of the material drum 10, and a material feeding port 13 corresponding to the material storage bin 12 is provided on the surface of the guide cylinder 11. The material drum 10 and the guide cylinder 11 are driven to rotate by a material drum driving device 14 and a guide cylinder driving device 15 respectively, and the material drum 10 and the guide cylinder 11 can both rotate independently; when the material storage bin 12 and the material feeding port 13 are both located at the lower end and correspond in position, the material placed in the material storage bin 12 falls into the material conveying device through the material feeding port 13 under the action of gravity. The present invention utilizes a material drum 10 and a guide cylinder 11 that can both rotate independently to achieve material discharge control, that is, when the storage bin 12 on the material drum 10 and the feeding port 13 on the guide cylinder 11 are both located at the lower end and in corresponding positions, the material is driven to fall by gravity; when the material drum 10 and the guide cylinder 11 are located at other positions, the position of the material in the storage bin 12 on the material drum 10 is limited by the wall of the guide cylinder 11 to prevent the material from falling off, and has the advantages of simple structure and reliable use.

[0037] In the present invention, a plurality of axial storage bin groups 16 are evenly arranged along the circumference of the drum 10 on the circumferential surface of the drum 10, and each axial storage bin group 16 includes a plurality of storage bins 12 evenly arranged along the axial direction on the circumferential surface of the drum 10; a plurality of feed ports 13 are arranged along the axial direction of the guide cylinder 11 on the circumferential surface of the drum 11, and the plurality of feed ports 13 correspond one-to-one with the positions of the plurality of storage bins 12 in the axial storage bin groups 16. In this embodiment, 25 axial storage bin groups 16 can be arranged on the circumferential surface of the drum 10, each axial storage bin group 16 including 12 storage bins 12, and the drum 10 can store 300 material bags at a time; 12 feed ports 13 corresponding to the storage bins 12 are also arranged on the circumferential surface of the guide cylinder 11.

[0038] In order to achieve independent rotation of the material drum 10 and the guide cylinder 11, in the present invention, a drive device support 17 is provided in the material drum 10, and the material drum drive device 14 and the guide cylinder drive device 15 are respectively arranged in the drive device support 17. The rotating shaft of the guide cylinder drive device 15 passes through the hollow rotating shaft of the material drum drive device 14 and is connected to the guide cylinder 11. The hollow rotating shaft of the material drum drive device 14 is connected to the material drum 10, and the drive device support 17 is connected to the sliding bracket 3. Both the material drum drive device 14 and the guide cylinder drive device 15 can adopt stepping rotary motors.

[0039] In this embodiment, the left and right ends of the material drum 10 are respectively provided with a left material drum spoke 18 and a right material drum spoke 19, and the left and right ends of the guide cylinder 11 are respectively provided with a left guide cylinder spoke 20 and a right guide cylinder spoke 21. The left material drum spoke 18 and the left guide cylinder spoke 20 are rotatably connected to the left end of the drive device support 17 via a left material drum bearing 26 and a left guide cylinder bearing 27, respectively. The rotating shaft of the guide cylinder drive device 15 is connected to the guide cylinder drive shaft 25 via a coupling 24. The guide cylinder drive shaft 25 passes through the hollow rotating shaft of the material drum drive device 14 and is connected to the right guide cylinder spoke 21. The right material drum spoke 19 is rotatably connected to the right end of the drive device support 17 via a right material drum bearing 22. The right guide cylinder spoke 21 is rotatably connected to the right material drum spoke 19 via a right guide cylinder bearing 23. A spacing sleeve 28 is provided at the left end of the drive device support 17 between the left material drum bearing 26 and the left guide cylinder bearing 27.

[0040] In the present invention, the method for using the auxiliary feeding device, that is, the auxiliary feeding method implemented by using the auxiliary feeding device, comprises the following steps in sequence:

[0041] A: Move the sliding bracket 3 outward to remove the material drum 10 and the guide cylinder 11 from the outer cylinder 2; then proceed to step B;

[0042] B: The material drum driving device 14 and the guide cylinder driving device 15 are used to respectively control the material drum 10 and the guide cylinder 11 to rotate to a certain angle, so that the multiple feeding ports 13 provided on the circumferential surface of the guide cylinder 11 are located at the uppermost end, and at the same time, a group of axial material storage bins 16 provided on the circumferential surface of the material drum 10 are located at the uppermost end. At this time, the multiple feeding ports 13 correspond one-to-one to the multiple material storage bins 12 included in the group of axial material storage bins 16; then, the material bags are sequentially placed into the corresponding material storage bins 12 through the feeding ports 13; then, it is determined whether it is necessary to continue discharging; if so, step C is entered; if not, step D is entered;

[0043] C: The drum driving device 14 is used to control the drum 10 to rotate a certain angle so that the next group of axial storage bins 16 provided on the circumferential surface of the drum 10 is located at the uppermost end. At this time, it is ensured that the plurality of feed ports 13 correspond to the plurality of storage bins 12 included in the group of axial storage bins 16. Then, the material bags are sequentially placed into the corresponding storage bins 12 through the feed ports 13. It is then determined whether further discharge is required. If so, step C is repeated until all the material bags are placed into the corresponding storage bins 12. If not, step D is entered.

[0044] D: Move the sliding bracket 3 inward to allow the material drum 10 and the guide cylinder 11 to enter the outer cylinder 2; then proceed to step E;

[0045] E: First, the guide cylinder 11 is controlled to rotate by the guide cylinder driving device 15, so that the several feeding ports 13 provided on the circumferential surface of the guide cylinder 11 are located between the two groups of axial storage bins 16 provided on the circumferential surface of the drum 10, and the position of the material in the storage bin 12 on the drum 10 is limited by the wall of the guide cylinder 11 to prevent the material bag from accidentally falling off; then the drum driving device 14 and the guide cylinder driving device 15 respectively control the drum 10 and the guide cylinder 11 to rotate synchronously until the several feeding ports 13 provided on the circumferential surface of the guide cylinder 11 are located between the two groups of axial storage bins 16 provided on the circumferential surface of the drum 10. The feed port 13 is located at the lowest end, so that the guide cylinder 11 reaches the working position; finally, the drum driving device 14 controls the drum 10 to rotate a certain angle, so that a group of axial storage bins 16 provided on the circumferential surface of the drum 10 is also located at the lowest end. At this time, the several feed ports 13 located at the lowest end correspond one-to-one to the several storage bins 12 contained in the group of axial storage bins 16, and the material bags in the axial storage bins 12 in the axial storage bin group 16 all fall into the spiral conveying device 5 on the inner wall of the outer cylinder 2 through the corresponding feed ports 13;

[0046] E: The outer cylinder 2 is controlled to rotate by the outer cylinder driving device 6; the outer cylinder 2 rotates and drives the spiral conveying device 5 to rotate; at this time, every time the outer cylinder 2 rotates one circle, a material bag in the spiral conveying device 5 will fall into the feed hole of the element analyzer through the discharge port 1 under the action of the spiral conveying device 5; according to the number of material bags in the axial storage bin 12 in the axial storage bin group 16, the number of rotations of the outer cylinder 2 is controlled until all the material bags in the spiral conveying device 5 fall into the feed hole of the element analyzer in sequence, completing the feeding of the material bags in the group of axial storage bins 16;

[0047] Then, it is determined whether it is necessary to continue feeding; if so, the process proceeds to step F; if not, the auxiliary feeding work of the element analyzer has been completed;

[0048] F: The material drum 10 is controlled to rotate a certain angle through the material drum driving device 14 so that the next group of axial material storage bin group 16 with material bags is located at the lowest end. At this time, the material bags in the axial material storage bin 12 in the axial material storage bin group 16 located at the lowest end all fall into the spiral conveying device 5 on the inner wall of the outer cylinder 2 through the corresponding feed port 13; then return to step E.

Claims

1. An auxiliary feeding device for a soil element analyzer, characterized in that: The material conveying device comprises an outer cylinder with a discharge port and a hollow structure, wherein a material conveying device is arranged in the outer cylinder; a feeding device is also coaxially arranged in the outer cylinder, and a plurality of storage bins are arranged on the feeding device. The feeding device rotates so that the materials placed in the storage bins fall into the material conveying device in sequence, and are conveyed to the discharge port by the material conveying device; the feeding device is arranged on a sliding bracket, and the outer cylinder is arranged on a base, and the sliding bracket is slidably connected to the base; The feeding device includes a coaxial material drum and a guide cylinder arranged inside and outside. Both the material drum and the guide cylinder are hollow cylindrical structures. A plurality of storage bins are provided on the surface of the material drum, and a feeding port corresponding to the storage bins is provided on the surface of the guide cylinder. The material drum and the guide cylinder are driven to rotate by the material drum driving device and the guide cylinder driving device respectively. The material placed in the storage bin falls into the material conveying device through the feeding port. A drive device support is provided in the material drum, the material drum drive device and the guide cylinder drive device are respectively provided in the drive device support, the rotating shaft of the guide cylinder drive device passes through the hollow rotating shaft of the material drum drive device and is connected to the guide cylinder, the hollow rotating shaft of the material drum drive device is connected to the material drum, and the drive device support is connected to the sliding bracket; Several groups of axial storage bin groups are evenly arranged on the circumferential surface of the material drum along the circumference of the material drum, and each group of axial storage bin groups includes several storage bins evenly arranged axially on the circumferential surface of the material drum; several feeding ports are arranged on the circumferential surface of the guide cylinder along the axial direction of the guide cylinder, and the several feeding ports correspond one-to-one to the positions of the several storage bins in the axial storage bin group.

2. The auxiliary feeding device of the soil element analyzer according to claim 1, characterized in that: The material conveying device adopts a screw conveying device arranged on the inner wall of the outer cylinder, and the outer cylinder is driven to rotate by an outer cylinder driving device.

3. The auxiliary feeding device of the soil element analyzer according to claim 2, characterized in that: The discharge port is arranged on the circumferential surface of one end of the outer cylinder, and the position of the discharge port corresponds to the position of the discharge port of the spiral conveying device.

4. The auxiliary feeding device of the soil element analyzer according to claim 3, characterized in that: The outer cylinder driving device is installed on the driving device support plate set at one end of the base, and the rotating shaft of the outer cylinder driving device is connected to the outer cylinder through the outer cylinder driving disk set on one end surface of the outer cylinder; an outer cylinder bracket adapted to the outer diameter of the outer cylinder is also set at one end of the lower part of the base.

5. The auxiliary feeding device of the soil element analyzer according to claim 1, characterized in that: The left and right ends of the material drum are respectively provided with a left material drum spoke plate and a right material drum spoke plate, and the left and right ends of the guide cylinder are respectively provided with a left guide cylinder spoke plate and a right guide cylinder spoke plate. The left material drum spoke plate and the left guide cylinder spoke plate are rotatably connected to the left end of the drive device support through the left material drum bearing and the left guide cylinder bearing respectively; the rotating shaft of the guide cylinder drive device is connected to the guide cylinder drive shaft through a coupling, and the guide cylinder drive shaft passes through the hollow rotating shaft of the material drum drive device and is connected to the right guide cylinder spoke plate, and the right material drum spoke plate is rotatably connected to the right end of the drive device support through the right material drum bearing; the right guide cylinder spoke plate is rotatably connected to the right material drum spoke plate through the right guide cylinder bearing.

6. The auxiliary feeding device of the soil element analyzer according to claim 5, characterized in that: An isolation sleeve is provided at the left end of the driving device support between the left bearing of the material drum and the left bearing of the guide cylinder.

7. An auxiliary feeding method using the soil element analyzer according to claim 1, characterized in that: The following steps are included in sequence: A: Move the sliding bracket outward to remove the material drum and guide cylinder from the outer cylinder; Then proceed to step B; B: The drum drive device and the guide drum drive device are used to control the rotation of the drum and the guide drum respectively, so that the multiple feeding ports provided on the circumferential surface of the guide drum are located at the uppermost end, and at the same time, a group of axial storage bins provided on the circumferential surface of the drum are located at the uppermost end. At this time, the multiple feeding ports correspond to the multiple storage bins included in the group of axial storage bins one by one; then, the material bags are sequentially placed into the corresponding storage bins through the feeding ports; then, it is determined whether to continue discharging; if so, the process proceeds to step C; if not, the process proceeds to step D; C: Control the rotation of the drum through the drum driving device so that the next group of axial storage bins provided on the circumferential surface of the drum is located at the uppermost end. At this time, the plurality of feed ports correspond one to one with the plurality of storage bins contained in the group of axial storage bins. Then, the material bags are sequentially placed into the corresponding storage bins through the feed ports. It is then determined whether further discharge is required. If so, step C is repeated until all the material bags are placed into the corresponding storage bins. If not, step D is entered. D: Move the sliding bracket inward to allow the material drum and guide cylinder to enter the outer cylinder; Then proceed to step E; E: First, the guide drum is controlled to rotate by the guide drum driving device so that the multiple feeding ports provided on the circumferential surface of the guide drum are located between the two groups of axial storage bin groups provided on the circumferential surface of the drum; then, the drum driving device and the guide drum driving device are respectively used to control the synchronous rotation of the drum and the guide drum until the multiple feeding ports provided on the circumferential surface of the guide drum are located at the lowest end; finally, the drum driving device is used to control the rotation of the drum so that the group of axial storage bin groups provided on the circumferential surface of the drum is located at the lowest end. At this time, the material bags in the axial storage bins of the axial storage bin group located at the lowest end all fall into the spiral conveying device on the inner wall of the outer drum through the corresponding feeding ports; E: The outer cylinder is controlled to rotate by the outer cylinder driving device. At this time, every time the outer cylinder rotates one circle, a material bag in the spiral conveying device will fall into the feed hole of the element analyzer through the discharge port. According to the number of material bags in the axial storage bins in the axial storage bin group, the number of rotations of the outer cylinder is controlled until all the material bags in the spiral conveying device fall into the feed hole of the element analyzer in sequence, completing the feeding of the material bags in the axial storage bin group. Then, it is determined whether it is necessary to continue feeding; if so, the process proceeds to step F; if not, the auxiliary feeding work of the element analyzer has been completed; F: Control the rotation of the drum through the drum driving device so that the next group of axial storage bins with material bags are located at the bottom. At this time, the material bags in the axial storage bins of the axial storage bin group located at the bottom all fall into the spiral conveying device on the inner wall of the outer cylinder through the corresponding feed port; then return to step E.

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